Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a34220702ad61a…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 09:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2bcecb23995b1277df157b75ebe9a2ab SHA-1: 12fd30852517552d8c87db2d9f37568b4c1b4828 SHA-256: 17a34220702ad61a013bf143f6a11bca3129803cbe3cda0f8f9a708dc8ca1e69
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate downloads, but many point to known malicious redirectors or algorithmically generated URLs. The primary redirector URL is https://ttraff.ru/wb?keyword=tally%20erp%209%20exercise%20book%20pdf%20free%20download, which is used in conjunction with a "free download" lure. This indicates a phishing or malware distribution attempt, likely leveraging a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=tally%20erp%209%20exercise%20book%20pdf%20free%20download In PDF document text
    • http://dopanali.thickandthintheatreproductions.com/uploads/1/3/2/8/132814742/1716113.pdfIn PDF document text
    • http://ropotetor.lake-n-golf.com/uploads/1/3/1/4/131454415/254790.pdfIn PDF document text
    • http://files.asliagirbas.com/uploads/1/3/0/7/130776841/07f27bfa0f9527.pdfIn PDF document text
    • http://files.danettemariealbino.com/uploads/1/3/2/7/132712209/7259567.pdfIn PDF document text
    • http://vowijobut.greatmausoleums.com/uploads/1/3/1/4/131407498/davubudilume_zijaso_gupaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/selection_sort_algorithm_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/the_bulletproof_diet_roadmap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/17643623967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/91371442147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/gipipifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1613/1484/files/mixed_modal_verbs_exercises_advanced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2985/4368/files/bivanodafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/fafovukexawesidedul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/78354830752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/49193821238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3876/1379/files/89200584405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/dezelikisegepave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7614/0710/files/11942267597.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000666c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5720 bytes
SHA-256: d03983462a3ab522d5e534718018ec54b8fca33ade2daefb58783e87615b9bed
font_01_sfnt_off00007a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A07 10136 bytes
SHA-256: 4db78ec8aa1f171b87f665b25fa246950d3c5b7af399f9219f9ecc7a4aaa4421